[Intel-gfx] [PATCH 1/3 V3] drm/i915: duplicate fixed mode for sdvo lvds

[Ma Ling]

duplicate sdvo fixed mode for adjustment , then delete when sdvo is destroyed.

Signed-off-by: Ma Ling <ling.ma at intel.com>
---
 drivers/gpu/drm/i915/intel_sdvo.c |   22 ++++++++++++++++++++--
 1 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index aae1843..700d742 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -74,6 +74,8 @@ struct intel_sdvo_priv {
 	 */
 	bool is_lvds;
 
+	struct drm_display_mode *sdvo_lvds_fixed_mode;
+
 	/**
 	 * Returned SDTV resolutions allowed for the current format, if the
 	 * device reported it.
@@ -1549,6 +1551,7 @@ static void intel_sdvo_get_lvds_modes(struct drm_connector *connector)
 	struct intel_output *intel_output = to_intel_output(connector);
 	struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
 	struct drm_i915_private *dev_priv = connector->dev->dev_private;
+	struct drm_display_mode *newmode;
 
 	/*
 	 * Attempt to get the mode list from DDC.
@@ -1557,11 +1560,10 @@ static void intel_sdvo_get_lvds_modes(struct drm_connector *connector)
 	 */
 	intel_ddc_get_modes(intel_output);
 	if (list_empty(&connector->probed_modes) == false)
-		return;
+		goto end;
 
 	/* Fetch modes from VBT */
 	if (dev_priv->sdvo_lvds_vbt_mode != NULL) {
-		struct drm_display_mode *newmode;
 		newmode = drm_mode_duplicate(connector->dev,
 					     dev_priv->sdvo_lvds_vbt_mode);
 		if (newmode != NULL) {
@@ -1571,6 +1573,16 @@ static void intel_sdvo_get_lvds_modes(struct drm_connector *connector)
 			drm_mode_probed_add(connector, newmode);
 		}
 	}
+
+end:
+	list_for_each_entry(newmode, &connector->probed_modes, head) {
+		if (newmode->type & DRM_MODE_TYPE_PREFERRED) {
+			sdvo_priv->sdvo_lvds_fixed_mode =
+				drm_mode_duplicate(connector->dev, newmode);
+			break;
+		}
+	}
+
 }
 
 static int intel_sdvo_get_modes(struct drm_connector *connector)
@@ -1593,14 +1605,20 @@ static int intel_sdvo_get_modes(struct drm_connector *connector)
 static void intel_sdvo_destroy(struct drm_connector *connector)
 {
 	struct intel_output *intel_output = to_intel_output(connector);
+	struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
 
 	if (intel_output->i2c_bus)
 		intel_i2c_destroy(intel_output->i2c_bus);
 	if (intel_output->ddc_bus)
 		intel_i2c_destroy(intel_output->ddc_bus);
 
+	if (sdvo_priv->sdvo_lvds_fixed_mode != NULL)
+		drm_mode_destroy(connector->dev,
+				 sdvo_priv->sdvo_lvds_fixed_mode);
+
 	drm_sysfs_connector_remove(connector);
 	drm_connector_cleanup(connector);
+
 	kfree(intel_output);
 }
 
-- 
1.5.4.4